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Questions about the 82240A/B



#2

Hi all,

I just bought an 82240A and a B and the 82242A, and I have a few questions.

1) What are the differences between the 2 models?

2) How can I plot the nice function graph that shows on the 82240B box from a 41CX? The output looks like an advanced version of PRPLOT.

3) I it possible to read data from the IR module 82242A?

Sorry for all the questions, but I'm new to the IR arena - could not afford this technology before moving to US :-)

Thanks a lot,

Silvio


#3

Hi, Silvio;

the major difference between both 82240A and B is the available character set. The B version was offered latter, because of the extended character set from the HP48SX, and it contains both ROMAN 8 (the only one available in the A version) and ECMA 96. You can select which of them to use by the escape sequences 27 249 (ECMA96) and 27 248 (ROMAN8). If you want to use the escape sequences, the 82242 Owner's Manual explains how. The HP48SX has the OLDPRT function, that remaps its printing output when you are using the 82240A printer with it. If you are using the 82240A and you want to print with the B version, the best solution is to clear the PRTPAR variable. If I am not wrong, you do not own any HP48 series, at least for now, right? So, do not worry about this.

The other interesting difference you'll see when using each of them for listing programs or printing any bunch of sequenced text lines. The B version allows a better reading, because an extra blank dot-line is added between each printed line (in fact, this blank dot-line is "borrowed" from the upper line characters, that are one dot-line shorter).

The fancy printout you see in the photo is from the sample program that is shown in the HP42S Owner's Manual. This sort of printout can be generated in any of these: HP42S, HP48(any), HP49G, BUT the HP41. What you see is a mix of text and LCD printing. If you use ACCOL, BLDSPEC, ACSPEC, SKPCOL and PRBUFF you'll be able to build and print custom characters with the HP41, but you'll still have the extra blank dot line when printing. Have a look at chapter 5 (Graphics) in the 82242A Owner's Manual and check for the possibilities. In any case, you'll have to create programs for the HP41 in order to use these features for plotting.

The best way to read data from the 82242A is using INPRT for the HP48 (there are different versions of INPRT for the S and G series). This way, the HP48 will "read" the IR input and save the input data as characters. You can collect program listings, trace calculations and program output, i.e., whatever goes out from the 82242A. Then, simply connect the 48 to your PC and transfer the collected data.

Does it help? If you need anything else, e-mail me; if I can help, that will be my pleasure.

Inté. (seeyah)


#4

I didn't know that, that there were different versions for INPRT (I've got it, but never successfully used it, DOH!). Thanks (again :), Vieira.


#5

Hey, Glen;

I'm glad I can include fresh information in here. I am sure I got INPRT for the G series at the www.hpcalc.org. Anyway, I have them both somewhere in here. If you do not find them easily, let me know and I'll send them for you by e-mail.

Best regards.

#6

Thanks Luiz, it helped a lot.
It's a shame we can't have a fine plotting from the 41, but nothing is perfect.
I don't have a 48 yet, but I'll have to buy one now ;-)

Also, is there any way to send data to the 41 using the IR module? In that way, one could use the INPTR to read a program from the 41 into a 48 and store it on a PC, for example. And do the reverse when needed. Any ideas?

P.S. Did you get my emails about the X-Memory modules?

Silvio


#7

Hi, Silvio;

first of all, thank you for your help. I'm working on the HP31E and, as soon as I have it running around the table, I'm posting something. Thank you.

The bad news is that the 82242A does not have an input sensor, say, it you cannot use it to receive data. The output can always be used to send data to an HP48 (also, the HP49 does not have any built-in IR, so it cannot be used with IR devices), but it is a printer-related output; this means you will not send anything but IR-coded characters. I am not sure about it, but maybe our wizards in here (no pun intended at all, I respect you all in your powerfull and admirable knowledge) know a way to send code by using synth resources, who knows!

Best regards. Inté!


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